Back to Student Worksheet
Math Grade 6-8 Answer Key

Percent Discount and Tax

Finding sale prices, tax amounts, and total costs

Answer Key
Name:
Date:
Score: / 15

Percent Discount and Tax

Finding sale prices, tax amounts, and total costs

Math - Grade 6-8

Instructions: Read each problem carefully. Calculate the discount or tax amount, then find the final price when needed. Show your work in the space provided.
  1. 1

    A shirt costs $30 and is on sale for 20% off. What is the discount amount?

    Change the percent to a decimal before multiplying.

    The discount amount is $6 because 20% of $30 is 0.20 x 30 = 6.
  2. 2

    A backpack costs $45 and is on sale for 10% off. What is the sale price after the discount?

    The sale price is $40.50 because 10% of $45 is $4.50, and $45 - $4.50 = $40.50.
  3. 3

    A pair of shoes costs $60. The store offers 25% off. What is the discount amount and the sale price?

    Find one fourth of 60.

    The discount amount is $15 and the sale price is $45 because 25% of $60 is 0.25 x 60 = 15, and $60 - $15 = $45.
  4. 4

    A video game costs $50 before tax. The sales tax rate is 8%. How much tax is added?

    The tax added is $4 because 8% of $50 is 0.08 x 50 = 4.
  5. 5

    A skateboard costs $80 before tax. The sales tax rate is 7.5%. What is the total cost after tax?

    Find the tax first, then add it to the original price.

    The total cost is $86 because 7.5% of $80 is 0.075 x 80 = 6, and $80 + $6 = $86.
  6. 6

    A jacket costs $72 and is marked 15% off. What is the sale price?

    The sale price is $61.20 because 15% of $72 is 0.15 x 72 = 10.80, and $72 - $10.80 = $61.20.
  7. 7

    A phone case costs $18 after a 10% discount. How much money was taken off?

    After a 10% discount, the sale price is 90% of the original price.

    The discount was $2 because if the original price is p, then 90% of p is $18. The original price is $20, so the discount is $20 - $18 = $2.
  8. 8

    A bicycle helmet costs $40 and has a 30% discount. Then 5% sales tax is added to the discounted price. What is the final cost?

    The final cost is $29.40 because 30% of $40 is $12, so the discounted price is $28. Then 5% of $28 is $1.40, and $28 + $1.40 = $29.40.
  9. 9

    A notebook costs $6.50 before tax. The sales tax rate is 6%. What is the total cost after tax?

    The total cost is $6.89 because 6% of $6.50 is 0.39, and $6.50 + $0.39 = $6.89.
  10. 10

    A store sign says 35% off a $200 tablet. What is the sale price?

    Find the amount of the discount, then subtract.

    The sale price is $130 because 35% of $200 is $70, and $200 - $70 = $130.
  11. 11

    A snack costs $2.40 before tax. The tax rate is 5%. How much tax is added?

    The tax added is $0.12 because 5% of $2.40 is 0.05 x 2.40 = 0.12.
  12. 12

    A store offers 20% off an item that normally costs $75. After the discount, 8% sales tax is added. What is the final price?

    Do the discount before the tax.

    The final price is $64.80 because 20% of $75 is $15, so the discounted price is $60. Then 8% of $60 is $4.80, and $60 + $4.80 = $64.80.
  13. 13

    A camera costs $120 before tax. The total cost after tax is $129.60. What is the tax rate?

    The tax rate is 8% because the tax amount is $129.60 - $120 = $9.60, and $9.60 divided by $120 equals 0.08, or 8%.
  14. 14

    A sweater is on sale for $51 after a 15% discount. What was the original price?

    The sale price is 85% of the original price.

    The original price was $60 because after a 15% discount, the sale price is 85% of the original price. Since $51 divided by 0.85 equals 60, the original price was $60.
  15. 15

    A student buys a calculator for $25 with a 12% discount and then pays 4% sales tax on the discounted price. What is the final cost?

    The final cost is $22.88 because 12% of $25 is $3, so the discounted price is $22. Then 4% of $22 is $0.88, and $22 + $0.88 = $22.88.
LivePhysics.com Math - Grade 6-8 - Answer Key